213056 has 14 divisors (see below), whose sum is σ = 422910. Its totient is φ = 106496.

The previous prime is 213043. The next prime is 213067. The reversal of 213056 is 650312.

It can be written as a sum of positive squares in only one way, i.e., 173056 + 40000 = 416^2 + 200^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1601 + ... + 1728.

2²¹³⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

213056 is a deficient number, since it is larger than the sum of its proper divisors (209854).

213056 is an equidigital number, since it uses as much as digits as its factorization.

213056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3341 (or 3331 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 213056 is about 461.5798955761. The cubic root of 213056 is about 59.7261594985.

Adding to 213056 its reverse (650312), we get a palindrome (863368).

The spelling of 213056 in words is "two hundred thirteen thousand, fifty-six".